SK202005A3 - Arrangement construction of doors with heat-resistant glass for chimney inset and chimney stove - Google Patents

Abstract

Assembleable construction of doors with heat-resistant glass for fireplace inserts and fireplaces, where the intake and regulation of rinsing air onto the glass is performed through a labyrinth slot, the width (X) of which, representing at the outlet edge the distance between the glass and the outlet edge of the basic frame, is regulated by moving the frame with glass (6) relative to the basic frame (1 ).

Description

Technical field

FIELD OF THE INVENTION The present invention relates to a door construction of solid fuel fire inserts and stoves that use refractory glass to visualize combustion.

BACKGROUND OF THE INVENTION

The amount of combustion air involved in the combustion of fuel, its regulation, the temperature and the supply to the combustion process play an important role in the process of optimal energy utilization of the fuel.

An important utility parameter of fireplaces and glass fireplaces is the ability to maintain the cleanliness and transparency of the refractory glass during the combustion process over the entire power range.

The cleanliness of the glass is greatly influenced by the supply of air to the combustion process, which is fed alongside the glass, thus ensuring the so-called "burn-up". glass rinsing. In case of insufficiency and also insufficient preheating of this so-called. Rinsing air and its poor direction along the glass also leads to the possibility of glass contamination.

A separate chapter in technical solutions is the connection of the supporting structure, ie different supporting frames with glass. It is necessary to ensure that the glass is not damaged due to thermal deformation. This is particularly challenging for triangular frames where the lower edge of the glass is not covered by the supporting frame.

It is an object of the present invention to provide a door construction of fireplaces and glazed stoves with glazed doors and a three-sided support frame which largely solves the above-mentioned areas and advantageously combines these solutions in one piece.

SUMMARY OF THE INVENTION

The aforementioned drawbacks are largely eliminated by the glass frame and door frame construction, the regulation and the combustion air supply, wherein the movable glass frame is connected to the base frame by means of a pair of rods pivotally mounted on one side and a bimetal holder on the other side . When burning by changing the temperature of the bimetallic holders, their temperature deformations and thus the small movement of the whole door are caused, which causes a reduction or enlargement of the air intake gap for the combustion and hence the amount of air. Changing the size of the slot also changes the speed of its flow, which causes less contamination of the glass.

The advantage of the proposed design of the regulation of the combustion air supply is the simplicity of the design and the reliable functionality of the automatic regulation depending on the temperature.

Overview of the figures in the drawing.

The technical solution is explained in more detail by means of drawings in which:

Figure 1 shows the overall door assembly in cross-section in the home position.

Fig. 2 shows in simplified form the connection of the base frame (1) and the movable frame (2) to the glass (6). Also shown in the figure is the function of the support roller (4), which determines the exact position of the lower edge of the glass movable door frame relative to the base frame. The dashed line shows the position of the open door with possible glass cleaning.

Fig. 3 shows a longitudinal section of the left side of the door. The longitudinal section of the right side is a mirror image.

DETAILED DESCRIPTION OF THE INVENTION

The overall door assembly consists of the following basic parts: two frames - base frame (1) and movable frame (2), tie rods (3), support rollers (4), guide rails (5), refractory glass (6), bimetal holder ( 7), magnetic holder (8).

Figures 1 and 2 show the connection of the base frame (1) and the movable frame (2) to the glass (6) by means of a pair of rods (3). The function of the support roller (4) the door frame with glass relative to the base frame with the door closed, thereby allowing the edge of the glass to be properly sealed. The bimetallic holder (7) is fixed at the bottom to the base frame (1) and at the top it is connected to the movable frame (2) by means of a magnetic holder (8). During temperature deformation of the bimetallic holder (7) frame. The movable frame (2) with the glass (6), by its movement relative to the base frame (1), changes the cross-sectional width of the labyrinth slot (X) and thus changes the amount and velocity of the rinsing air flow at the outlet into the combustion chamber.

In Figure 3, a labyrinth gap can be seen between the base frame (1), the movable frame (2) with the glass (6). In the figure, the regulated cross section of the outlet slot is dimensioned (X).

It can also be seen from the figures how the rinsing air can flow through the labyrinth formed between the base (1) and the movable frame (2) while preheating and directed to the inside of the glass from the focus side.

Claims (3)

Patent claims. An assembled door construction of fireplaces and fireplaces, characterized in that the supply and regulation of the rinsing air (9) to the glass (6) is through a labyrinth slot whose width (X) as the distance between the glass (6) and the outlet edge of the base frame (1) is controlled by the movement of the glass frame (6) relative to the base frame (1). A fireplace door and fireplace assembly according to claim 1, characterized in that the labyrinth slit is formed by two U-shaped profiles which are mirrored in each other and form a hollow profile with open slots for the rinse air flow (9). The fireplace door and fireplace assembly according to claim 1, characterized in that the movable frame (2) with glass (6) is fixed to the base frame (1) by means of two pairs of rods (3) and in the basic control position. centered by the support rollers (4), which makes it possible to realize the control movement and also the overall opening of the door when cleaning the glass.